Spark-arrester



' (No Model.)

H. E. BRADLEY.

SPARK ARRESTER.

No. 317,290. Patented May 5, 1885.;

WITNESSES I gEiTER ATTORNEY v N. PETERS mmmmh m. wmunmm. m;

UNITED STATES PATENT OFFICE.

HENRY E. BRADLEY, OF BUCHANAN, MICHIGAN.

SPARK-ARRESTEQR.

SPECIFICATION forming part of Letters Patent No. 317,290, dated May 5,1885.

7 Application filed October 29, 1884. (No modeL) To all whom it mayconcern.-

Be it known that I, HENRY E. BRADLEY, of Buchanan, in the county ofBerrien and State of Michigan, have invented certain new and usefulImprovements in Spark-Arresters; and I do hereby declare that thefollowing is a full, clear,and exact description thereof, referencebeing bad to the accompanying drawings, and to the letters of referencemarked thereon, which form part of this specification, in which Figure 1is a side elevation ofpart of ahorizontal steam-boiler and smole-stack,showing my improved spark-arresting injector applied to thesame. Fig. 2 is a similar View of the boiler and staclgshowing amodification of the injector.

This invention relates to that class of sparkextinguishers forsteam-boilers wherein a spray-inj ector or a water-atomizer is used inthe smoke-stack for extinguishing sparks; and it consists in combiningwith a spray-injector located in the stack or uptake novel means forsupplying water from the tank and steam from the boiler, as will befully understood from the following descriptiomwhen taken in connectionwith the annexed drawings.

I am well aware that,broadly considered,it is not new in spark-arrestersto employa device in the stack of the boiler for injecting a spray ofwater among the live sparks,and thus extinguishing them. I therefore donot claim such contrivances eXcept when employed in the manner hereinset forth. i

In the annexed drawings, Fig. 1, A designates a steam-boiler of thehorizontal kind, and B the smoke-stack or uptake of the boiler.

O designates the water-pump, of well-known construction, from which apipe, E, leads to the water-supply tank. (Not shown in the drawings.)This pump supplies the boiler with water.

F designates a pipe which communicates with the water-supply pipe of thepump, and which is provided with a regulatingcock, a, outside of thestack, and an injecting-nozzle horizontally arranged in thesmoke-stackB.

Instead of connecting the pipe F with the supply-pipe E of the pump, asshown in Fig. 1, I may use a hose, F, as shown in Fig. 2, and connectthis hose with the tank from which water is pumped to supply the boiler.

G designates a pipe which communicates with the steam-space of theboiler A, and which is provided with a cock, 6, outside of the stack B,and an injecting-nozzle,H, inside of this stack. The injecting-points ofthe two nozzles are so arranged relatively to each other that the forceof the stream issuing from the vertical centrally-arranged nozzle H willconstantly tend to produce a partial vacuum in the pipe F, and thusinject a fine spray of water upwardly among the flying sparks, there- Iby extinguishing them.

The cocks in the two injector-pipes are designed for allowing the waterand steam supply to be properly regulated. Both of these pipes F and Gpass horizontally through the smoke-stack B, and are provided with abrace, J, for holding the points of the injecting-nozzles rigidlyinproper position.

My improvements are especially applicable to steam-boilers which areused for engines designed for driving thrashing-machines, where there isgreat danger from flying live sparks; but it is also applicable tosteam-boilers for other purposes.

Having described my invention,I claim- 1. In combination with asteam-boiler and nioating with a water-tank, of the water-supply pipeleading from the pump'supply pipe to a nozzle in the smoke-stack, and apipe leading from the steam-pipe to a nozzle in said stack, and bothpipes being provided with cocks, and supported substantially asdescribed.

In testimony that I claim the foregoing as my own I affix my' signaturein presence of two witnesses.

HENRY E. BRADLEY.

Witnesses:

A. A. WoR'rHINGroN, Lou WonTHmeroN.

